Home / 90,831.70-136,150.35-40,903.30

Finding the Fourth Proportional to 90,831.70, 136,150.35 and 40,903.30

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Solution

The fourth proportional to 90,831.70, 136,150.35 and 40,903.30 is: 61,311.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.70 : 136,150.35 = 40,903.30 : x
  2. Step 2: Convert to fraction form
    90,831.70/136,150.35 = 40,903.30/x
  3. Step 3: Cross multiply
    90,831.70x = 136,150.35 × 40,903.30
  4. Step 4: Simplify right side
    90,831.70x = 5,568,998,611.16
  5. Step 5: Solve for x
    x = 5,568,998,611.16/90,831.70
  6. Step 6: Final answer
    x = 61,311.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.